@cosytoasty thinks it's a parsnip but i disagree.. it's gotta be something else
MHO to whoever can provide evidence :P
[See GIF] What is King Bumi eating?
What Guys Said 6
Deez nuts, ha got emmmmmm1
That's the crystal candy from his first appearance on the show.1
What Girls Said 12
King Bumi and I share a name/nickname, though I spell mine differently. Hence, we have an innate connection. Therefore, I can soundly say he is eating rock candy, which has many purposes as Katara and Sokka find out in Episode 5; Book 1: Water, titled: The King of Omashu.
He's eating the crystal that he used to imprison katara and sokka. He said after letting them go that it's edible too. :D1
Jennamite, that's the name of the rock candy.1
Looks like an icicle1